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Gre4nikov [31]
1 year ago
11

**50 POINTS** HELP ASAP

Chemistry
2 answers:
Afina-wow [57]1 year ago
8 0
For part 1 the answer is, they change because of the sun and earth spinning

For part 2 it is the new moon and the partially crescent moon.
Ostrovityanka [42]1 year ago
7 0

Part 1:

The moon rotates around earth causing its lighting to change as its position changes everyday


Part 2:

A new moon

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Choose the substance with the highest vapor pressure at a given temperature:a. SiS2b. RbClc. CH3SCH3d. BF3e. SbH3
Alexandra [31]

Answer:

correct option is d. BF3

Explanation:

BF3 have lower molecular weight than the SiS2 and CH3SCH3  

but it has a more attractive force

and here dispersion forces is the weakest in BF3  

but CH3SCH3 have dipole forces

In Bf3 have only vanderwaal force and it holds the molecule together in liquid but it not have hydrogen bonding  

and at 0°C  substance is in gas no liquid and no vapour  

so here correct option is d. BF3

3 0
1 year ago
The formula of the most common in of sulphur
AlexFokin [52]

Answer:

AascdAx\

Explanation:

qkru9QUHUJfWBFSJFVBu\khvfbQJ VQG

3 0
1 year ago
Read 2 more answers
How do protons neutrons and electrons affect the overall charge of an atom
aleksklad [387]

Answer:

It determines the stability electric state of the atom

Explanation:

Now atoms are stable depending on the number of neutrons they have in their nuclei. If the no of electrons Equal no of protons then the atom is said to be neutral

bear in mind that neutrons have no charge so they don't affect the atom's electric state.

it's the neutrons that determines the atom's radioactive state

5 0
1 year ago
How to find chemical formula for copper ii nitride?
Pani-rosa [81]
We know that Copper ll 's symbol is Cu^{+2} and Nitride's is N^{-2}

Because both have opposite charges of +2 and -2, they both cancel out when written. When writing a chemical formula, the cation (positive ion/element) is written before the anion (negative ion). The formula name already had the correct order. Therefore, your chemical formula is just CuN

Hope this helps!
5 0
1 year ago
Which of the following is true of grinding during
VLD [36.1K]

The process of grinding is a physical change that takes place in the mouth during digestion.

<h3>GRINDING:</h3>

Grinding is one of the processes that occur during the digestion of food molecules into simpler substances.

Grinding of food molecules occurs in the mouth with the aid of the teeth, which is used to chew.

However, the process of grinding is a physical change because it does not result into the formation of new substances or change the chemical constituents of the food.

Learn more about physical change at: brainly.com/question/1984022?referrer=searchResults

5 0
10 months ago
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